re:
> I have Moi3D v2 but Blend command is not working like on the video. Is
> blend comman better on v3?

Yes, there are various improvements to the Blend command in v3 - one thing is that you can select multiple edges on each side of the blend instead of only being able to blend between 2 edges like in v2, and there are some new options like being able to add sync points.